ZN85 auxiliary handcart designed and produced by us has a screw rod drive mechanism and can be moved easily and avoid damage of thedrive mechanism due to misoperation.It applies to the 50Hz and 40.5kV three-phase alternating-current single-bus segmented power systemsin KYN61-40.5 armored mobile metallic metal-enclosed switchgears.Used with different primary components,it can realize bus connection,electric energy measurement,and overload protection or short-circuit protection for power equipment and,during system overhauls,functionalcomponent and interlocking.
ZN85 auxiliary handcart is produced in line with the following standard and code.
GB/T 11022-2011 Common specifications for high-voltage switchgear and controlgear standards
● IEC 62271-2007 High-voltage switchgear and controlgear -Part 1:Common specifications
Normal operating conditions
● Ambient temperature:-40℃~+40℃(below 35℃ within 24 hours)
● Relative humidity:≤95%(daily average)or ≤90%(monthly average)
● Altitude:≤1000m
1.1 Technical parameters
| Item | Unit | Reference value |
| Rated voltage | kV | 40.5 |
| Lightning impulse withstand voltage | kV | 185 |
| Rated insulation level 1min power-frequency withstand voltage | kV | 95 |
| Rated frequeng | Hz | 50/60 |
1.2 Drawing of linkage between the moving contact and the fixed contact
Overall and Installation dimension
Overall dimension of ZN85-40.5 isolating handcart(cabinet width:1400mm)
| Rated current(A) | 630 | 1250 |
| Fixed contact size D(mm) | φ35 | middle 49 |
| nterphase distance(mm) | 300 | |
| Handcart travel(mm) | 610±2 | |
| 59 | For the auxiliary switch in the operating position |
| 58 | or the auxiliary switch in the operating position |
| Y1 | Blocking electromagnet (optional part) |
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